Tire-setter.



No. 322,933. PATENTED JUNE 12, 1906. 'J. & M. EVANS.

TIRE SETTER.

APPLICATION FILED FEB. 1. 1906.

Witnesses: Inventors ELM/261.8 I WWW 4 LrfimM/w'%w Attorney UNITEDSTATES PATENT OFFICE.

TlRE-SETTER.

Specification of Letters Patent.

Patented June 12, 1906.

Application filed February 1, 1906. Serial No. 298,919.

To ail whom it may concern/.-

Be it known that we, JEssE EVANS and MINOR Evans, citizens of the UnitedStates, residing at Hamilton, Butler county, Ohio, have invented certainnew and useful Improvements in Tire-Setters, of which the following is aspecification.

There is a general class of machines for binding tubular tires upon the.wheels of the lighter class of vehicles, such machines embodying a pairof wire-holding clamps and a wire-straining device.

Our invention pertains to certain details of construction in this classof machines, and the invention will be readily understood from thefollowing description, taken in connec tion with the accompanyingdrawings, in which Figure 1 is a front elevation of our improvedtire-setter; Fig. 2, a sectional plan of the machine; Fig. 3, aportional side elevation of the machine; Fig. 4, a portional sideelevation of the machine on an enlarged scale; and Fig. 5 a frontelevation of the functional portions of the clamps, in conjunction withthe wire and tire upon which they work.

In the drawings, 1 indicates a flat upright board adapted to be securedagainst a support or in a vise at convenient working height; 2, a clampfirmly secured to the upper portion of the board and presenting narrowclamping-jaws downwardly at some distance from the top of the board insuch position as to clamp the wire lying parallel with the front face ofthe board; 3, a similar clamp disposed alongside the first one, a spacebeing left between the lower ends of the two clamps, this space wideningupwardly; 4, a deep notch extending from the upper end of the boarddownwardly between the two clamps and to a point below the lower ends ofthe clamps; 5, a rotary spindle journaled in a bearing firmly secured tothe edge of the board; 6, a hole diametrically through the spindle inposition to be substantially in a horizontal plane common with that ofthe lower ends of the clamps and in a vertical plane correspondingsubstantially with that of the gripping-space between the jaws of theclamps; 7, a handle on the spindle, by means of which the spindle may beturned; 8, a ratchet fast on the spindle; 8 a pawl supported by theboard and engaging the ratchet 9, a grooved clamp formed in a castingsecured to the face of the board below the notch 4, the groove of saidclamp being open at the top and bottom and front and extendingvertically and being wider at the bottom than at the top; 10, the rubbertire to be applied to the wheel, and 11 the wire disposed within thebore of the tire to serve in securing it to the wheel.

In using the apparatus the tire is cut to proper length, which lengthshould exceed the circumference of the felly by about onehalf inch foreach foot of wheel diameter. Within the tire is inserted the wire ofsuch length as to project three and one-half or four inches beyond oneend of the tire and a few inches more beyond the other end of the tire.The shorter projecting end of the wire is then to be clamped lightly inthe gripping-points of the jaws of the right-hand clamp, the rubber tirecoming against the right-hand side of the aws and the extra wireprojecting idly through the left-hand clamp above the gripping-points ofthe aws of that clamp. The other end of the wire is to be passed throughbetween the gripping-points of the left-hand clamp and clamped lightly,the extra wire of this end passing onward idly through the right-handclamp above the gripping-points of its aws and then through the hole inthe spindle, the wire being preferably given a sharp bend just beyondthe spindle in order that it may not slip back through the spindle.

The projecting end 13 of the wire is now to be firmly grasped withpliers and pulled to the left until the rubber abutting against theright-hand clamp has been compressed to such extent as to consume aboutone-half of the excess length to which the rubber has been cut. Thlscompression of the rubber will not be localized at the right-hand clamp,but will be distributed circumferentially for some distance away fromthe clamp. The right-hand clamp is now to be firmly tightened, thussecurely gripping the wire 13, but leaving the wire 14 free so far asthe righthand clamp is concerned. The wheel is now to be placed withinthe tire, a few short leather straps 12 being interposed between thetire and felly, these straps being preferably equally distributed aroundthe wheel. The spindle is now to be turned so as to wind up on the wire14 and draw it through the left-hand clamp, the left-hand portion of therubber coming against the outer portion of this clamp and becomingcompressed. The turning of the spindle is to be continued until the wirehas been put under desired maxi mum strain, the degree of which will beread ily arrived at by experience. The left-hand clamp is then to befirmly tightened, thus leaving the rubber tightly bound to the felly,the ends of the rubber being separated by the distance represented bythe distance between the exterior of the two clamps, the rubber at eachside of the gap and for considerable circumferential distance therefrombeing under severe compression. ire 14 is then to be severed between thespindle and the righthand clamp. By the use of pliers or other suitabletwisting-tool applied to the crossing of the two wires between theclamps the wires are then twisted together, two or three turns beingsufficient for ordinary cases. Both clamps are now to be loosened, andthe wheel, with the attached wire, is to be removed and the ends of thewires projecting beyond the twist are to be cut off.

As soon as the wheel is removed from the clamp the reaction of therubber will cause its ends to move toward the twisted juncture of thewire; but the friction of the rubber in the felly will be too great topermit the rubber by its own action to close the gap between its ends.The operator now places the rim of the wheel in the grooved clamp 9 withthe tire-gap upward and bears against the opposite point of thewheel-rim with his body, pulling the tire upwardly in the grooved clampuntil it is pinched therein. He then pulls circumferentially upon theleather strap between the grooved clamp and the tire-gap, thus workingthe rubber forward toward the gap until its end is at about the middleof the twisted splice. The next strap beyond the grooved clamp may becalled into play at an earlier or later stage in alternation with thefirst-mentioned strap in working the rubber to the desired point. Thestraps upon this side of the wheel may now be drawn out. The wheel isthen to be reversed in the grooved clamp and the other strapsmanipulated till the second end of the rubber is brought up over thesplice and into compressive abutting engagement with the first end,leaving the splice of the wire nicely covered by the rubber and leavingthe rubber under fairly equal tangential compression all the way aroundthe wheel. Just prior to the abutting of the ends of the rubber theremay be, if desired, a little rubber cement applied to the ends, so thata fairly homogeneous joint is formed.

We claim In a tire-setter the combination, substantially as set forth,of an upright flat support having a notch in its upper end and anupwardly-narrowing groove opening outwardly below the notch, a pair ofseparated clamps fixedly secured to the support at the sides of thenotch and presenting gripping-j aws downwardly above the level of thebase of the notch at each side thereof, a perforated spindle journaledon the support at one side of the pair of clamps, a ratchet on thespindle, and a pawl pivoted on the support and engaging the ratchet.

, JESSE EVANS.

MINOR EVANS.

l/Vitnesses ELMER R. SHIPLEY, M. S. BELDEN.

